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/*C
(c) 2005 bl0rg.net
**/
#include "conf.h"
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include "buf.h"
int buf_alloc(buf_t *buf, unsigned long size) {
assert(buf != NULL);
assert(size > 0);
buf->data = malloc(size);
if (buf->data != NULL) {
buf->size = size;
buf->len = 0;
return 1;
} else
return 0;
}
int buf_grow(buf_t *buf) {
assert(buf != NULL);
assert(buf->size > 0);
assert(buf->data != NULL);
assert(buf->len <= buf->size);
void *new = realloc(buf->data, buf->size * 2);
if (new != NULL) {
buf->data = new;
buf->size *= 2;
return 1;
} else
return 0;
}
int buf_append(buf_t *buf, void *data, unsigned long len) {
assert(buf != NULL);
assert(buf->data != NULL);
assert(data != NULL);
assert(len > 0);
again:
if ((buf->len + len) > buf->size) {
if (!buf_grow(buf))
return 0;
else
goto again;
}
memcpy(buf->data + buf->len, data, len);
buf->len += len;
return 1;
}
void buf_free(buf_t *buf) {
assert(buf != NULL);
assert(buf->size > 0);
assert(buf->data != NULL);
free(buf->data);
buf->size = 0;
buf->len = 0;
buf->data = NULL;
}
/*C
**/
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